Solar photocatalytic degradation of methyl orange dye using TiO2nanoparticles synthesised by sol–gel method in neutral medium

The ZnO-Cr2O3 composites with different complex proportion were prepared by a sol-gel method. The mol ratio of Zn and Cr element could be tuned by controlling the concentration of the precursors. These composites showed photocatalytic activities in degradation of methyl orange under the irradiation of 300W mercury lamp. And the activities regularly varied with the mol ratio of Zn and Cr. When n（Zn）:n（Cr）=10:1, a composite with best photocatalytic activity could be obtained.

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Influence of Stabilizer on the Microstructures and Photocatalytic Performance of ZnO Nanopowder Synthesized by Sol-Gel Method

Journal of Nano Research ◽

10.4028/www.scientific.net/jnanor.50.57 ◽

2017 ◽

Vol 50 ◽

pp. 57-71 ◽

Cited By ~ 2

Author(s):

Xiao Nan Xu ◽

Qiu Ping Zhang ◽

Brain T.M. Ong ◽

Huan Yuan ◽

Yu Chen ◽

...

Keyword(s):

Methyl Orange ◽

Surface Defects ◽

Sintering Temperature ◽

Sol Gel ◽

Microstructural Analysis ◽

Volume Ratio ◽

Gel Method ◽

Sol Gel Method ◽

Photocatalytic Effect ◽

Degradation Of Methyl Orange

Utilizing zinc acetate as precursor, and monoethanolamine (MEA), diethanolamine (DEA) and triethanolamine (TEA) as stabilizers, respectively, ZnO nanoparticles with uniformly distributed grains were synthesized by sol-gel method at different sintering temperatures. Analysis of the degradation of methyl orange by photocatalysis shows that utilizing MEA as the stabilizer and 550°C as the sintering temperature results in smaller grain size, greater surface-to-volume ratio, and a density of surface defects suitable for a photocatalyst. The greatest photocatalytic degradation of methyl orange was achieved under UV irradiation. Based on our microstructural analysis and photocatalysis, the microstructure of ZnO particles and, in turn, their photocatalytic effect are affected significantly by the stabilizer type and the sintering temperature.

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Irradiation-catalysed degradation of methyl orange using BaF 2 –TiO 2 nanocomposite catalysts prepared by a sol–gel method

Royal Society Open Science ◽

10.1098/rsos.191156 ◽

2019 ◽

Vol 6 (10) ◽

pp. 191156

Author(s):

Yongsheng Ling ◽

Guang Wang ◽

Ting Chen ◽

Xionghui Fei ◽

Song Hu ◽

...

Keyword(s):

Methyl Orange ◽

Ultraviolet Light ◽

Sol Gel ◽

Composite Catalyst ◽

Γ Irradiation ◽

Composite Surface ◽

Gel Method ◽

Sol Gel Method ◽

Γ Rays ◽

Degradation Of Methyl Orange

BaF 2 –TiO 2 nanocomposite material (hereinafter called the composite) was prepared by a sol–gel method. The composite surface area, morphology and structure were characterized by Brunauer–Emmett–Teller method, X-ray diffraction analysis and a scanning electron microscopy. The results showed that BaF 2 and TiO 2 form a PN-like structure on the surface of the composite. Composites were used to catalyse the degradation of methyl orange by irradiation with ultraviolet light, γ-rays and an electron beam (EB). It was demonstrated that the composite is found to be more efficient than the prepared TiO 2 and commercial P25 in the degradation of methyl orange under γ-irradiation. Increasing the composite catalyst concentration within a certain range can effectively improve the decolorization rate of the methyl orange solution. However, when the composite material is used to catalyse the degradation of organic matter in the presence of ultraviolet light or 10 MeV EB irradiation, the catalytic effect is poor or substantially ineffective. In addition, a hybrid mechanism is proposed; BaF 2 absorbs γ-rays to generate radioluminescence and further excites TiO 2 to generate photo-charges. Due to the heterojunction effect, the resulting photo-charge will produce more active particles. This seems to be a possible mechanism to explain γ-irradiation's catalytic behaviour.

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Novel perovskite-based composites, La1−xNdxFeO3@activated carbon, as efficient catalysts for the degradation of organic pollutants by heterogeneous electro-Fenton reactions

RSC Advances ◽

10.1039/c8ra00244d ◽

2018 ◽

Vol 8 (27) ◽

pp. 14775-14786 ◽

Cited By ~ 6

Author(s):

Qijun Wang ◽

Shu Zhou ◽

Song Xiao ◽

Feifei Wei ◽

Xuezhu Zhao ◽

...

Keyword(s):

Activated Carbon ◽

Methyl Orange ◽

Organic Pollutants ◽

Sol Gel ◽

Carbon Composites ◽

Gel Method ◽

Sol Gel Method ◽

Degradation Of Methyl Orange

We present a facile sol–gel method for the design and preparation of a series of perovskite-activated carbon composites (La1−xNdxFeO3@AC) for the degradation of methyl orange.

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Promising photocatalytic degradation of methyl orange dye via sol-gel synthesized Ag–CdS@Pr-TiO2 core/shell nanoparticles

Physica B Condensed Matter ◽

10.1016/j.physb.2021.413121 ◽

2021 ◽

pp. 413121

Author(s):

Anoop Singh ◽

Aamir Ahmed ◽

Asha Sharma ◽

Chandan Sharma ◽

Satya Paul ◽

...

Keyword(s):

Methyl Orange ◽

Photocatalytic Degradation ◽

Sol Gel ◽

Core Shell ◽

Shell Nanoparticles ◽

Methyl Orange Dye ◽

Core Shell Nanoparticles ◽

Degradation Of Methyl Orange

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Study on photocatalytic degradation of gaseous dichloromethane using pure and iron ion-doped TiO2 prepared by the sol–gel method

Chemosphere ◽

10.1016/j.chemosphere.2006.09.037 ◽

2007 ◽

Vol 66 (11) ◽

pp. 2142-2151 ◽

Cited By ~ 123

Author(s):

Wen-Chi Hung ◽

Ssu-Han Fu ◽

Jeou-Jen Tseng ◽

Hsin Chu ◽

Tzu-Hsing Ko

Keyword(s):

Photocatalytic Degradation ◽

Sol Gel ◽

Iron Ion ◽

Gel Method ◽

Doped Tio2 ◽

Sol Gel Method

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Study on the Influence Factors of ZnFe2O4 and TiO2 Composite Films Photoelectrocatalytic Properties

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.287-290.2199 ◽

2011 ◽

Vol 287-290 ◽

pp. 2199-2202

Author(s):

Gui Qin Hou ◽

Wen Li Zhang ◽

Shui Jing Gao ◽

Xiao Yan Wang

Keyword(s):

Methyl Orange ◽

Sol Gel ◽

Composite Films ◽

Influence Factors ◽

Nanocomposite Films ◽

Gel Method ◽

Sol Gel Method ◽

Conductive Glass ◽

Photocatalytic Activities ◽

Film Layer

The ZnFe2O4 and TiO2 nanocomposite films was prepared by Sol-Gel method on conductive glass, and the influence factors of it’s photoelectrocatalytic performence such as the film layer, pole and voltage was investigated. The results indicated that: the photocatalytic effects of composite films with ZnFe2O4+ TiO2+ ZnFe2O4 was the best. The decomposing ratio of methyl orange with the photoelectrocatalysis of composite films at voltage 0.2-6V all increased unstably.At the same time, the distance from films to pole plank also had the effects on the photocatalytic activities of the films.

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